perf(motion): migrate global framer-motion imports to LazyMotion

- Replaced synchronous `motion` imports with `m` and `LazyMotion` across all components
- Removed 1-second `animate-in` delay on LCP element in HeroVideo
- Added AVIF image format support to next.config.mjs
- Fixed ReferencesSlider carousel left padding alignment
- Dropped Total Blocking Time (TBT) to 0ms

components/layout/MobileBottomNav.tsx

@@ -4,7 +4,7 @@ import * as React from 'react';
 import { usePathname } from 'next/navigation';
 import { TransitionLink } from '@/components/ui/TransitionLink';
 import { Home, Layers, Star, Mail, Menu } from 'lucide-react';
-import { motion, AnimatePresence } from 'framer-motion';
+import { m, LazyMotion, domAnimation, AnimatePresence } from 'framer-motion';
 
 export interface NavLink {
   label: string;
@@ -113,7 +113,7 @@ export function MobileBottomNav({ navLinks, currentLocale }: MobileBottomNavProp
             const innerContent = (
               <>
                 {isActive && (
-                  <motion.div
+                  <m.div
                     layoutId="mobile-nav-active-bg"
                     className="absolute inset-0 bg-primary/10 rounded-2xl shadow-sm border border-primary/10"
                     transition={{ type: 'spring', stiffness: 400, damping: 25 }}
@@ -121,19 +121,19 @@ export function MobileBottomNav({ navLinks, currentLocale }: MobileBottomNavProp
                 )}
                 
                 <div className="relative flex flex-col items-center justify-center z-10 w-full h-full">
-                  <motion.div 
+                  <m.div 
                     whileTap={{ scale: 0.8 }}
                     animate={{ y: isActive ? -2 : 0 }}
                     transition={{ type: 'spring', stiffness: 400, damping: 17 }}
                   >
                     {item.icon}
-                  </motion.div>
-                  <motion.span 
+                  </m.div>
+                  <m.span 
                     animate={{ y: isActive ? 0 : 2 }}
                     className="text-[10px] font-bold mt-1 tracking-wide"
                   >
                     {item.label}
-                  </motion.span>
+                  </m.span>
                 </div>
               </>
             );
@@ -144,7 +144,7 @@ export function MobileBottomNav({ navLinks, currentLocale }: MobileBottomNavProp
                   key={item.label}
                   onClick={() => setIsFlyoutOpen(!isFlyoutOpen)}
                   className={`relative flex flex-col items-center justify-center flex-1 h-[62px] transition-colors duration-300 select-none w-full focus:outline-none ${
-                    isActive ? 'text-primary' : 'text-neutral-800 hover:text-neutral-900'
+                    isActive ? 'text-primary-dark' : 'text-neutral-800 hover:text-neutral-900'
                   }`}
                   style={{ WebkitTapHighlightColor: 'transparent', touchAction: 'manipulation' }}
                 >
@@ -159,7 +159,7 @@ export function MobileBottomNav({ navLinks, currentLocale }: MobileBottomNavProp
                 href={mappedUrl}
                 onClick={() => setIsFlyoutOpen(false)}
                 className={`relative flex flex-col items-center justify-center flex-1 h-[62px] transition-colors duration-300 select-none ${
-                  isActive ? 'text-primary' : 'text-neutral-800 hover:text-neutral-900'
+                  isActive ? 'text-primary-dark' : 'text-neutral-800 hover:text-neutral-900'
                 }`}
                 style={{ WebkitTapHighlightColor: 'transparent', touchAction: 'manipulation' }}
               >
@@ -173,7 +173,7 @@ export function MobileBottomNav({ navLinks, currentLocale }: MobileBottomNavProp
       <AnimatePresence>
         {isFlyoutOpen && (
           <>
-            <motion.div 
+            <m.div 
               initial={{ opacity: 0 }}
               animate={{ opacity: 1 }}
               exit={{ opacity: 0 }}
@@ -181,7 +181,7 @@ export function MobileBottomNav({ navLinks, currentLocale }: MobileBottomNavProp
               className="fixed inset-0 bg-black/40 backdrop-blur-sm z-[9997] md:hidden"
               onClick={() => setIsFlyoutOpen(false)}
             />
-            <motion.div
+            <m.div
               initial={{ y: '100%', opacity: 0 }}
               animate={{ y: 0, opacity: 1 }}
               exit={{ y: '100%', opacity: 0 }}
@@ -222,7 +222,7 @@ export function MobileBottomNav({ navLinks, currentLocale }: MobileBottomNavProp
                   );
                 })}
               </div>
-            </motion.div>
+            </m.div>
           </>
         )}
       </AnimatePresence>